The naming of the new elements had been traditionally the privilege of the discoverer (or discoverers) and the suggested name was ratified by the IUPAC. In recent years this has led to some controversy. The new elements with very high atomic numbers are so unstable that only minute quantities, sometimes only a fev atoms of them are obtained. Their synthesis and characterisation, therefore, require highly sophisticated costly equipment and laboratory. Such work is carried out with competitive spirit only in some laboratories in the world.

1. The name of element should be derived directly from atomic number using the following numerical roots.
2. The roots should be written together In the order or digits present in the atomic number and should terminated by the suffix ium. If enn occurs before nil the second n of enn should be dropped Similarly the final 1 of bi and tri should be dropped when they occur before ium.
3. The symbol of element can be derived by composing the intial letters of the numerical mots (abbreviations) which constitute the name Table 4 4 shows IUPAC system.For example, the systematic IUPAC name of the element with z = 106 can be derived as follows,

The atomic number 106 consists of digit 1, 0 and 6 on writing together the numerical roots of these digits, we get unnilhex. On adding the remaining suffix ium to this, we get unnilhexium. This would be the systematic IUPAC name of the element having Z>106. As per rule (C), its symbol would be Unh. The systematic lUPAC offical names of Some elements having Z>100